+ 3. print current volume serial.
+ tune.exfat -i /dev/sda1
+ 4. set new volume serial.
+ tune.exfat -I 0x12345678 /dev/sda1
+
+- exfatlabel:
+ Get or Set volume label or serial
+
+Usage example:
+ 1. get current volume label.
+ exfatlabel /dev/sda1
+ 2. set new volume label.
+ exfatlabel /dev/sda1 "new label"
+ 3. get current volume serial.
+ exfatlabel -i /dev/sda1
+ 4. set new volume serial.
+ exfatlabel -i /dev/sda1 0x12345678
+
+- dump.exfat:
+ Show on-disk information
+
+Usage example:
+ dump.exfat /dev/sda1
+